Could it be TMJ? There seems to be alot of BFS sufferers that have TMJ. I was diagnosed with it about 10 years ago. My face felt tight...like swollen, but it wasn't. The neurologist sent me for an MRI. I don't exactly know what they find on these other than tumors, but he said my nerves were inflamed from gritting and grinding my teeth while I slept(I wasn't even aware I was doing this!). I was put on tegretol for 8 weeks for the inflammation. All the tightness went away. You could try one of the over the counter drugs for inflammation and maybe try a mouth guard(recommended by the neuro). This my friend was a life saver. I couldn't believe all the pressure taken off my face once I started wearing this at night.